아연제련
By: Nampʻo Cheryŏnso chŏ ; Pak Il-gŭk pʻyŏnjip
Publisher: Chunggongŏp Chʻulpʻansa
Published: 1965
Place of publication: Pʻyŏngyang
Language: kor
Number of pages: 311
Subjects: Zinc; Metallurgy
Other titles: Ayŏn cheryŏn